A bag contains 19 blue balls and 11 red balls. 8 balls are drawn from the bag one by one without replacement. What is the probability that the 8th ball drawn is red?
I am a bit confused so as to how to approach this problem. Bcoz I think, how can i calculate what is going to happen 8th draw, unless I have information about what has happen in the last 7 draws...? Plz explain it ...